Answer:
You would want to divide 6 by 2, getting x=3.
The answer I got was A.)$56.
Hope this helps!<3
Comment if you need help on how I got that answer!
The air force plane travelled for a total of 6.9 hours.
<u>SOLUTION:
</u>
Given, An Air Force plane left Nairobi and flew west at an average speed of 159 mph. A cargo plane left sometime later flying in the same direction at an average speed of 207 mph. After flying for 5.3 hours the cargo plane caught up with the Air Force plane.
We have to find the number of hours the Air Force plane flew before the cargo plane caught up.
Now, we know that, 
For air force plane 

Now, when cargo plane caught the air force plane the distance travelled by the planes will be equal.
So, 


Time taken by air force plane = 6.9 hrs
Answer:5.50x + 9 = 2.50x
Step-by-step explanation:
Answer:b
x=3-y/7
Multiple 7
7x=3-y
Subtract 3
7x-3=-y
Times both sides by negative 1
-7x+3